XTR300

The Texas Instruments XTR300 is a complete output driver designed for industrial and process control applications. It offers user-selectable voltage or current output modes, configurable via a digital I/V select pin. This device eliminates the need for an external shunt resistor, requiring only external gain-setting resistors and a loop compensation capacitor.

The XTR300 provides a high-voltage output capability with a supply voltage up to 40V. The output voltage can reach ±10V (up to ±17.5V at ±20V supply), and the output current is ±20mA (linear up to ±24mA). It includes features such as short- or open-circuit fault indication, output disable for single input mode, thermal protection, and overcurrent protection.

With separate driver and receiver channels, the XTR300 offers design flexibility. The integrated Instrumentation Amplifier (IA) can be used for remote voltage sensing or as a high-voltage, high-impedance measurement channel. In voltage output mode, a copy of the output current is provided, enabling load resistance calculation. Error flags and monitor pins facilitate remote configuration and troubleshooting, indicating fault conditions and over-temperature events.

This output driver is specified for the -40°C to +85°C industrial temperature range and is available in a VQFN (RGW) 20 package measuring 5 mm × 5 mm.